First of all I would suggest, if you truelly want to be cleamn and sober, you must set higher goals for yourself. 1 month is such a short goal to set with any kind of addiction. (in my opinion)
Im sure you know this but please please please be careful with the other drugs to help your w/d symptoms. You do not want to fall into trading one addiction for another. You will just set yourself up for a letdown.
My bf is a recovering opiate addict. I am a firm believer in you have to WANT to quit 100% or it just wont happen. He went to rehab wanting to quit. he left rehab after a week but so far has stayed away from the opiates. He is 25 days clean today. Look at it this way, if you continue to use you will just use more and more and more and then you will run into trouble in one way or another. Please be safe and understand you are much better than the drugs you use, you do not deserve to have a substance run your life. Keep coming back!